Outdoor gas tankless · Camplux

Camplux WA528 150,000 BTU Natural Gas Outdoor Tankless Water Heater

150,000 BTU/h outdoor gas tankless, about 5.1 GPM at a 45°F rise

5.3 GPM max150,000 BTU/h~3.3 GPM at 70°F riseOutdoor, no vent pipe

Updated October 2026

The short answer

A sensible outdoor gas tankless for one shower at a time in cold climates.

Delivers
150,000 BTU/h input.
Watch for
Gas pipe sizing to confirm.
Suits
One shower at a time in cold climates.
Max flow (maker)
5.28 GPM
Input (maker)
150,000 btu_per_hour_per_foot_per_fahrenheit
Voltage
120 V
Fuel
propane
Venting
Outdoor Installation
Material
Stainless Steel
Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

What it delivers

The Camplux WA528 150,000 BTU Natural Gas Outdoor Tankless Water Heater is an outdoor gas tankless with a 150,000 BTU/h burner and a stated maximum flow of 5.3 GPM.

Worked out from its input, it delivers roughly 5.1 GPM when the water only has to rise 45°F, and 3.3 GPM at a 70°F winter rise: 2 showers at 2 GPM in summer, 1 shower at 2 GPM in winter. Run your house through the planner.

The line must deliver about 145 cubic feet of natural gas an hour or about 1.6 gallons of propane an hour when it fires flat out. The requirement calculator adds it up; a licensed fitter confirms the pipe.

Outdoor units vent straight out of the cabinet, which saves the vent run and the wall penetration; plan for freeze protection and a pipe cover where winters bite.

The listing describes its venting as: Outdoor Installation.

Other listed details: material: Stainless Steel; model: WA528; warranty: 1 Year Warranty.

The listing gives dimensions of 16.93 in (W) x 28.35 in (H) and a weight of 35.3 lb.

Warranty, per the listing: 1 Year Warranty.

Right unit for this house?

Install it when

  • One shower at a time in cold climates
  • Replacing a gas tank heater

Look at another unit when

  • More than 1 winter shower at once
  • Homes without a gas line

Strengths and trade-offs

Strengths

  • 150,000 BTU/h input
  • Up to 5.3 GPM
  • No vent pipe

Trade-offs

  • Gas pipe sizing to confirm
  • Needs freeze protection outdoors
  • Needs periodic descaling

Install limits

  • Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.

Rated performance

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Model numberWA528Retailer
Dimensions (seller)16.93"W x 28.35"HRetailer
Voltage120 VRetailer
Max flow (maker)5.28 GPMRetailer
Input (maker)150,000 btu_per_hour_per_foot_per_fahrenheitRetailer
Product weight35.3 lbRetailer
Warranty1 Year WarrantyRetailer
MaterialStainless SteelRetailer
FuelpropaneRetailer
VentingOutdoor InstallationRetailer

Rival units at this flow

More gas tankless water heaters rated for similar demand

Full gas tankless water heaters spec grid · Every Camplux unit in the catalog

Final verdict

A sensible outdoor gas tankless for one shower at a time in cold climates.

Buy this unit

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

How many showers can the Camplux WA528 150,000 BTU Natural Gas Outdoor Tankless Water Heater run at once?
From its 150,000 BTU/h input we estimate about 5.1 GPM at a 45°F rise and 3.3 GPM at a 70°F rise, so 2 two-GPM showers with mild inlet water and 1 in a cold winter. The maker's flow chart for this model is the final word.
What size gas line does the Camplux WA528 150,000 BTU Natural Gas Outdoor Tankless Water Heater need?
At full fire it uses about 145 cubic feet of natural gas an hour or 1.6 gallons of propane. The pipe size depends on the length of the run and every other gas appliance on it; the maker's manual and a licensed gas fitter decide it.